Gas apparatus



(no Model.) I 3' S heetsSheet 1.

' O. W. ISBELL.

GAS APPARATUS. No. 506,819. Patented Oct. 17, 1893.

3 SheetsSheet 2.. I C. SBELL.

ARATUS (NoModeL) GA I I Patented Oct. 17, 1893.

(No Model.) A a sheets-sheet 3.

C. W. ISBELL. GAS APPARATUS.

No. 506,819. Patented O ct. 17, 1893.

' UNITED STATES PATENT OFFICE.

CHARLES W. ISBELL, OF NEW YORK, N. Y.

GAS-APPARATUS.

SPEGIFIGATION forming part of Letters Patent No. 506,819, dated October17, 1893.

Application filed March 30,1893. Serial No. 468,398- (No model.)

To all whom it may concern:

Be it known that 1, CHARLES W. ISBELL, of New York, in the county andState of New York, have invented a new and useful Improvement in GasApparatus, of which the following is a specification.

My invention relates to an improvement in gas apparatus in whichprovision is made for utilizing the wastegasesof combustion in heatingup the coking chamber and for withdrawing coke from the chamber andintroducing it into the combustion chamber without any seriousdiminution of its heat and there utilizing it for the manufacture ofwater gas whereby it becomes feasible'to utilize bituminous coal in thecoking chamber and great economy in the manufacture of gas is secured.

A practical embodiment of my invention is represented in theaccompanying drawings in which Figure 1 is a view of the apparatus infront elevation. Fig. 2 is a view in transverse, Vertical section,partly in elevation, the section being taken near the end of theapparatus. Fig. 3 is a view in rear elevation, partly in section,showing the oil still in connection therewith. Figs. 4, 5 and 6represent respectively views in partial side elevation, partial verticalcross section and horizontal section of the coking chambers and fluesconnected therewith, and Figs. 7 and 8 represent respectively a partialvertical section from end to end and a horizontal section of a modifiedstructure in which the floor of the coking chamber is arranged on anincline and the chamber is made to extend laterally beyond thecombustion chamber.

In the form which I have chosen to illustrate my invention, I coupleapair of furnaces together and provide each with its own independentcoking chamber, the furnaces and the coking chambers being incommunication with the hydraulic main through which the gas is passed tothe holder. The arrangements of the two furnaces and their cokingchambers is such that the heated products of combustion from each of thefurnaces pass beneath the floor of their respective coking chambers andthen along one side of the coking chambers of both furnaces, as willhereinafter more particularly appear.

The combustion chambers of the two furnaces are represented by A and Aand in their general structure are quite similar, being separated in thepresent instance from one another by a partition 0..

Upon suitable arches or supports b at the upper portion of thecombustion chamber, rests the floor b of the coking chamber B, thecompanion coking chamber B having its floor in like manner supportedupon supports in the upper portion of the combustion chamber of thefurnace A. The products of combustion pass from the combustion chamberbeneath the floor I) through an opening a into a flue O, which extendshorizontally along thefront sides of both the coking chambers B and B,thence up into the end of areturning horizontal flue G, which extendsparallel with the flue C, and above it,back along the sides of the twocoking chambers B and B to the pipe D, having a purge valve (1. In likemanner, the products of combustion from the furnace A pass from itscombustion chamber into a horizontal flue C which extends along thesides of both the coking chambers B and B, thence up into acorresponding horizontal flue 0 leading back again parallel with theflue 0 along the sides of the two coking chambers B and B and thenceacross the end of the coking chamber B to the pipe D provided with thepurge valve d.

Each of the coking chambers is made to communicate with the combustionchamber of the furnaces through suitable passageways within the exteriorfurnace wall as follows. I have chosen to illustrate this clearly inconnection with the furnace A and its coking chamber B in Fig. 3, itbeing understood that the communication between the furnace A and itscoking chamber B is quite similar in construction. A flue E in thefurnace wall at a point opposite the floor of the coking chamber B has adownwardly slanting opening leading to the combustion chamber of thefurnace A. An opening 6, above the floor of the coking chamber B and ona level with the floor, extends through, the wall of the chamber intocommunication with the upper end of the flue E. A valve F is arranged toseat over the top of the flue E, shutting off its communication with thecoking chamber B except when such communication is desired. When it isdesired to-open communication between the coking chamber B' and thefurnace A, the valve Fby means of a suitable lever f connected to thevalve stem f-may be lifted from its seat into a recess 1 provided for itabove the opening 6 so as to leave the opening e'free for the passage ofthe coke from the chamber B into the flue E and thus into the combustionchamber of the furnace A.

Each of the coking chambers is provided with a pair of coal branches G,G for distributing the coal over the floor of the coking The coalbranches are each prochamber. vided with valves g, seated in diaphragmsg in the branches and with tightly fitting covers g for the purpose ofcharging the branches above the valve with coal, then closing the coversand finally opening the valves to permitthe coal to fall onto the fioorof the chamber,,as is usual. One of the coal branches, G for example,has a bridge pipe H leading therefrom ata point below the diaphragm gand communicating with a dip pipe h which extends down into thehydraulic main I, as clearly indicatedin Figs. 1 and 2. The pipes H andit serve to conduct the gas from the coal within the coking chamber Binto the hydraulic main at whatever moment during the charging oroperation of the apparatus it maybe formed irrespective of the closingof the purge Valves d and d after the blowingup has taken place. Thepipes D and D also connect with the hydraulic main I through "suitablebranch pipes d and d A general delivery pipe K leads from the hydraulicmain to a suitable gas holder, not shown. Pipes L and L for supplying ablast of air to the furnace, communicate with the same below the gratebars a and branch pipes Z, Z leading from the air pipes L and L are provided with branches communicating with the interior of the combustionchamber of the furnace for supplying air thereto, as may be desired. Asteam pipe M, from a suitable source of supply, not shown, leads to theinterior of the furnace for supplying steam thereto to make water gas.

The floor on which the operator stands for transferring the coke fromthe coking chamher into the furnace or for otherwise manipulating theapparatus in the vicinity of the coking chamber is denoted by N.

For the purpose of enriching the gas, as may be desired, I find itconvenient to locate an oil still at the rear of the apparatus and incommunication therewith as follows: The oil still comprises a series ofpipes 0, leading back and forth along the rear of the furnace andcommunicating with each other, through which the hydrocarbon oil isallowed to pass by entering through an inlet pipe 0. Within the pipes O,I locate steam pipes P, through which hot steam is caused to pass,tending to vaporize the oil. The oil vapors accumulate in a tank Q abovethe still and are held there under pressure until permitted to enter thegas conduit leading to the hydraulic main.

Such connection between the compression tank Q and the gas conduit ismade by a pipe q provided with a valve q.

Such parts of the apparatus as I have not particularly described andreferred to herein may be of any well known or approved form.

The apparatus is operated as follows: One of the furnaces, A forexample, having been charged with fuel and the purge valve 01 opened andthe fuel ignited, the blowing up takes place. The hot products ofcombustion coming in contact with the bottom of the cokingchamber B andthe sides of the two coking chambers will raise the floor and the wallof the chamber to a high heat which will coke the charge'of coal whichmay have been already placed within the chamber B.

When the chamber B is sufficientlyheated,

the purge valve d may be closed,the coke from the chamber B may bewithdrawn into the combustion chamber of the furnace A, steam admittedand the making of gas will proceed; the latterpassing through the branchpipe d into the hydraulic main.

The furnace A, while the furnace A is making gas, may be charged withfuel and the blowing-up process may take'place'in it in the mannerhereinabove described, its heated products of combustion serving to cokethe coal within the coking chamber B and it in turn may be set "tomaking gas while the furnaceA is itself recharged. Any gas which escapesfrom the coking chamber'during the process of blowing up or whilecharging the chamber, will escape through the bridge pipe'H and dip pipeh-into the hydraulic main and will be saved from waste.

The gas made from the coal and steam within the apparatus may beenriched at pleasure with the hydrocarbon gas from the oil by openingthevalve q and permitting the oil gas from the compression chamber Q toescape into and commingle with the gas from the apparatus at anyconvenient point along the-wall of the conduit leadingfrom thecombustion chamber.

In the form represented in Figs. .7 and 8, the floor R of the cokingchamber-is arranged on an incline, extending from the point beneath thecoal branch downwardly to the flue through which the coke is tranferredinto the combustion chamber. In this form also, the coking chamber ismade longer by extending its wall '8 laterally beyond the wall 8 of thefurnace.

What I claim is- 1. In gas apparatus, a combustion chamber, a cokingchamber separate from and subject to the heat of the products ofcombustion from said combustion chamber, a valved passageway connectingthe coking chamber and combustion chamber for the transmission of cokefrom the former to the latter, means for opening and closing saidpassageway at pleasure, a gas conduit leading from the combustionchamber to the hydraulic main and a gas conduit leading from the cokingchamber to the hydraulic main, the said last named conduit havingcommunication with the combustion chamber through the coking chamber andthrough the said valved passageway, substantially as set forth.

2. In gas apparatus, a combustion cham ber, a coking chamber separatefrom and subject to the heat of the products of combustion from saidcombustion chamber, a valved passageway at the side wall of thecombustion and coking chambers connecting the said chambers, a portionof said passageway forming at the same time a charging conduit for thecombustion chamber, a door opening to said valved passageway from theexterior of the apparatus, a hydraulic main, gas conduits leading fromthe combustion and coking chambers to the hydraulic main and a coalbranch communicating with the coking chamber, substantially as setforth.

3. In gas apparatus, a plurality of combustion chambers an independentcoking chamber for each combustion chamber, fines for the products ofcombustion leading from each combustion chamber along the walls of itsown and neighboring coking chambers, means for independently chargingthe coking chambers and the combustion chambers, and gas conduitsleading from the coking and combustion chambers to a hydraulic main,substantially asset forth.

4:. In gas apparatus, a combustion chamber, a coking chamber locatedover the combustion chamber andhaving a passageway for the discharge ofcoke at the side thereof, a passageway leading from the combustionchamber up to a point in proximity to the said passageway at the side ofthe coking chamber, a .valve .for closing the said passageway leadingfrom the combustion chamber, the wall of the apparatus being providedwith a recess above the top of the passageway at the side of the cokingchamber for the reception of said valve when the latter is open to leavea free opening for the transmission of coke from the coking chamber tothe combustion chamber, a coal branch for charging the coking chamberand gas conduits leading from the coking and combustion chambers,substantially as set forth.v

CHAS. W. ISBELL. Witnesses:

FREDK. HAYNES, IRENE B. DECKER.

